habanalabs: fix using freed pointer

The code uses the pointer for trace purpose (without actually
dereference it) but still get static analysis warning.
This patch eliminate the warning.

Signed-off-by: Ohad Sharabi <osharabi@habana.ai>
Reviewed-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>

diff --git a/drivers/misc/habanalabs/common/device.c b/drivers/misc/habanalabs/common/device.c
index 9b54d1d..dd01be5 100644 (file)
--- a/drivers/misc/habanalabs/common/device.c
+++ b/drivers/misc/habanalabs/common/device.c
@@ -135,6 +135,9 @@ static void hl_asic_dma_free_common(struct hl_device *hdev, size_t size, void *c
                                        dma_addr_t dma_handle, enum dma_alloc_type alloc_type,
                                        const char *caller)
 {
+       /* this is needed to avoid warning on using freed pointer */
+       u64 store_cpu_addr = (u64) (uintptr_t) cpu_addr;
+
        switch (alloc_type) {
        case DMA_ALLOC_COHERENT:
                hdev->asic_funcs->asic_dma_free_coherent(hdev, size, cpu_addr, dma_handle);
@@ -147,7 +150,7 @@ static void hl_asic_dma_free_common(struct hl_device *hdev, size_t size, void *c
                break;
        }
 
-       trace_habanalabs_dma_free(hdev->dev, (u64) (uintptr_t) cpu_addr, dma_handle, size, caller);
+       trace_habanalabs_dma_free(hdev->dev, store_cpu_addr, dma_handle, size, caller);
 }
 
 void *hl_asic_dma_alloc_coherent_caller(struct hl_device *hdev, size_t size, dma_addr_t *dma_handle,